389
FXUS65 KBYZ 291400
AFDBYZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
800 AM MDT TUE SEP 29 2026
KEY MESSAGES
- MILD AND MOSTLY DRY WEATHER PATTERN PREVAILS THROUGH THE REST OF
THE WEEK.
UPDATE
MILD AND DRY WEATHER ON TAP FOR TODAY. DOWNSLOPE WINDS HAVE
INCREASED ALONG THE WESTERN FOOTHILLS WITH GUSTS PERIODICALLY
ABOVE 30 MPH AT LIVINGSTON, BIG TIMBER AND JUDITH GAP. THIS WILL
EVOLVE INTO MODESTLY BREEZY MIXED WEST WINDS IN THE LATE MORNING
AND AFTERNOON. NO FORECAST ISSUES, BUT DID RAISE MORNING WINDS A
BIT IN THE WEST. LOOK FOR HIGH TEMPS WELL INTO THE 70S. JKL
DISCUSSION
TODAY THROUGH MONDAY...
BREEZY WINDS WILL SPREAD ACROSS PORTIONS OF SOUTH-CENTRAL MONTANA
TODAY, AS THE MAIN AXIS OF AN UPPER TROUGH CONTINUES TO MOVE
EASTWARD. GUSTS ALONG AND NORTH OF I-90/94 FROM LIVINGSTON TO
BAKER ARE FORECAST TO BE IN THE 20 TO 40 MPH RANGE, GREATEST ALONG
THE FOOTHILLS WEST OF BILLINGS.
HIGH TEMPERATURES ARE FORECAST TO BE SEASONABLE THIS WEEK, IN THE
60S AND LOW 70SF. EASTERLY FLOW ARRIVES ON WEDNESDAY WITH A WEAK
WAVE. THIS LOOKS TO PERSIST THROUGH THE END OF THE WEEK. THIS
PATTERN COULD ALLOW COOLER AIR TO DROP INTO THE REGION FROM CANADA
AS WELL. LIGHT SHOWERS ARE POSSIBLE IN THE EAST WEDNESDAY NIGHT.
MODELS ARE CURRENTLY DEPICTING AN AREA OF CONVERGENCE BRINGING
PRECIPITATION FROM ANY UPPER WAVE THURSDAY AFTERNOON INTO FRIDAY
MORNING. VERY LITTLE INSTABILITY IS SHOWN BY SOUNDINGS, SO SHOWERS
LOOK TO BE THE MAIN COURSE.
AN ADDITIONAL TROUGH SWINGING THROUGH THE REGION IS SHOWN BY
ENSEMBLES TO END THE WEEK, THIS COULD BRING ADDITIONAL
PRECIPITATION AND COOLER TEMPERATURES AS WELL. UNCERTAINTY REMAINS
HOWEVER, SO CONTINUE TO MONITOR THE FORECAST THROUGHOUT THE WEEK.
MATOS
AVIATION
EXPECT BREEZY WEST WINDS OVER MUCH OF MONTANA TODAY, WITH THE
STRONGEST WIND GUSTS OVER FOOTHILLS WEST OF BILLINGS (INCLUDING
KLVM, K6S0, AND K3HT). OTHERWISE, VFR CONDITIONS WILL PREVAIL. LA
PRELIMINARY POINT TEMP/POPS
TDY WED THU FRI SAT SUN MON
-------------------------------------------------------
BIL 077 050/074 046/066 044/071 047/069 045/070 047/078
0/U 00/B 01/B 11/B 30/U 00/U 00/B
LVM 075 045/073 038/069 040/075 043/071 041/074 044/079
0/U 00/U 01/B 11/B 20/U 00/U 00/U
HDN 079 046/075 044/068 042/072 046/070 044/072 045/079
0/U 00/U 01/B 11/B 31/U 00/U 00/B
MLS 077 051/073 045/064 043/069 048/067 046/069 048/075
0/U 00/B 03/W 11/B 21/U 00/U 00/U
4BQ 078 050/074 047/067 045/072 049/068 046/071 048/077
0/U 00/U 01/B 21/B 21/U 00/U 00/B
BHK 078 048/073 040/062 039/068 044/067 041/067 044/074
0/U 00/U 03/W 11/B 21/U 00/U 00/U
SHR 077 043/072 041/068 040/073 044/068 041/072 044/079
0/U 00/U 01/U 20/B 21/U 00/U 00/U
BYZ WATCHES/WARNINGS/ADVISORIES
MT...NONE.
WY...NONE.
WEATHER.GOV/BILLINGS
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